cwts certified wireless technology specialist official study guide exam pw0 070 phần 1 ppt

... 99 Amplitude 10 0 Phase 10 0 Frequencies Used for Wireless LANs 10 1 Coverage and Capacity 10 4 Coverage 10 5 Capacity 10 8 Channel Reuse and Co-location 10 9 RF Range and Speed 11 0 Line of Sight 11 1 Interference ... 11 1 Interference 11 2 Environment: RF Behavior 11 4 Basic Units of RF Measurement 11 8 Absolute Measurements of Power 11 8 Relative Measurements of Power 11 9...

Ngày tải lên: 10/08/2014, 12:21

... the Ethernet segment to wireless. Figure 3 .11 illustrates an applica- tion of a wireless workgroup or client bridge. 38893c03.indd 81 5 /18 /09 4: 51: 32 PM USB 1. 0, USB 1. 1, and USB 2.0 69 For ... (mW)  Decibel (dB)  dBm  dBi  38893c04.indd 95 5 /18 /09 5: 01: 17 PM 76 Chapter 3  Wireless LAN Client Devices FIGURE 3.8 Netgear WG 311 T IEEE 802 .11 g wireless PCI a...

Ngày tải lên: 10/08/2014, 12:21

... arena 38893c08.indd 279 5 /19 /09 6 :11 :54 AM 38893c08.indd 282 5 /19 /09 6 :11 :54 AM Antenna Use Consideration 2 71 Point of sale devices ÛN Voice handsets ÛN Other wireless devices used in various wireless LAN ... window. 10 . Close the 802 .11 b capture by clicking on the X next to the file name 802 .11 b.wsr. The Your Options screen will appear. Click mouse on the X to close...

Ngày tải lên: 10/08/2014, 12:21

... compliance. 7. C. 802 .11 a uses OFDM; ERP-OFDM is used in 802 .11 g. 8. A, C, D. 802 .11 b can use 1, 2, 5.5 and 11 Mbps. 6 and 12 Mbps are used in 802 .11 a and 802 .11 g. 9. A, D. 802 .11 g is backward compatible ... Amendments Details 802 .11 802 .11 a 802 .11 b 802 .11 g 2.4 GHz ISM band x x x 5 GHz UNII bands x FHSS x DSSS x x x HR/DSSS x x ERP-OFDM x OFDM x 1 and 2 Mbps x x x 5.5...

Ngày tải lên: 10/08/2014, 12:21

... 5.640 5.660 5.680 5.700 10 0 10 4 10 8 11 2 11 6 12 0 12 4 12 8 13 2 13 6 14 0 Americas/EMEA (4 channels) 5.725–5.825 5.745 5.765 5.785 5.805 14 9 15 3 15 7 16 1 Some regulatory domains allow ... IEEE 802 .11 amendments are interoperable? A. 802 .11 and 802 .11 a B. 802 .11 a and 802 .11 b C. 802 .11 a and 802 .11 g D. 802 .11 b and 802 .11 g 16 . Without any regulator...

Ngày tải lên: 10/08/2014, 12:21

... maximum of 11 Mbps. Ethernet is not a wireless LAN technology. 14 . C, D. IEEE 802 .11 a wireless LANs operate in the 5 GHz UNII bands. 802 .11 b/g wireless LANs operate in the 2.4 GHz ISM band. 15 . D. ... antenna. FIGURE 6 .11 Vertical (elevation) and horizontal (azimuth) charts for 2.4 GHz 8 dBi patch antenna 90° 12 0° 15 0° 18 0° 210 ° 240° 270° 300° 330° 0 10 20 3 30° 60°...

Ngày tải lên: 10/08/2014, 12:21

... – 61 –56 –58 36 –63 –58 –63 24 –67 –62 –67 12 /11 –72 –67 –72 6/5.5 –79 –74 –75 2 – 81 –76 N/A 1 –84 –79 N/A Source: Certified Wireless Network Administrator (CWNA) In IEEE 802 .11 wireless LAN technology, ... antenna selection 19 . Co-channel interference is caused by access points on . A. Channels 1 and 1 B. Channels 1 and 2 C. Channels 1 and 6 D. Channels 1, 6, and...

Ngày tải lên: 10/08/2014, 12:21

... 11 2 – 11 3, 14 8, 294, 298 and wireless network planning, 14 9 co-location, 10 9 – 11 0, 11 0 of HR/DSS and ERP-OFDM systems, 14 7 – 14 8 coaxial bulk cable, 18 5 collision avoidance with CSMA/CA, 13 4 with ... WEP. 38893bgloss.indd 4 41 5 /18 /09 4:09 :16 PM 446 APIPA – CEPT semidirectional, 17 0, 17 1, 17 2 – 18 0 appropriate use, 17 3 – 17 4 highly directional anten...

Ngày tải lên: 10/08/2014, 12:21

... Review Questions 11 4 Chapter 3 Installing, Configuring, and Troubleshooting Devices 11 5 Connecting Peripherals to Windows Vista 11 6 Establishing Connections to Peripherals 11 6 Troubleshooting ... to Peripherals 11 7 Troubleshooting Bluetooth Connections 11 7 Troubleshooting USB Connections 12 3 Troubleshooting Other Connectivity Issues 12 4 Installing and Configuring Webcams...

Ngày tải lên: 10/08/2014, 13:20

... under. 17 . D. net list is not a valid net command. 18 . B. The drive must be 2.0 compliant, 2.5 MB per second throughput for random reads and 1. 75 MB per second throughput for random writes. 19 . ... printers, fax, and copy devices. 65348.book Page 11 5 Monday, October 22, 2007 4:27 PM Setting Up and Configuring Windows Applications 10 1 FIGURE 2.62 Back Up Files wizard: specifying...

Ngày tải lên: 10/08/2014, 13:20